As for this invention, general formula (i) below (in formula, as for R1 it is the hydrocarbon chain of the unsaturated fatty acid of C12 C24 which at least includes one unsaturation R2 and R3, becoming independent or simultaneously, hydrogen, are C1 C3 alkyl or phenyl As for R4, there is hydrogen atom, or COR DE, R ha, at least one unsaturation, profitably 1 - 6, it is the hydrocarbon chain of the C12 C24 unsaturated fatty acid which includes unsaturation 1 - 4 desirably) it regards the chemical compound which it possesses here.本発明は、以下の一般式(I)(式中、R1は少なくとも1つの不飽和を含むC12-C24の不飽和脂肪酸の炭化水素鎖であり;R2およびR3は、独立してまたは同時に、水素、C1-C3アルキルまたはフェニルであり;R4は、水素原子、またはCOR1’であり、ここでR1’は、少なくとも1つの不飽和、有利には1~6、好ましくは1~4の不飽和を含むC12-C24不飽和脂肪酸の炭化水素鎖である)を有する化合物に関する。
